testing/web-platform/tests/css/css-position/multicol/static-position/vlr-in-multicol-ref.html


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<!DOCTYPE html>
<style>
  body { writing-mode: vertical-lr; }
  .container {
    background: green;
    inline-size: 80px;
    block-size: 600px;
  }
  .multicol {
    column-count: 2;
    column-fill: auto;
    column-gap: 0;
    block-size: 100px;
    inline-size: 160px;
  }
</style>

There should be no red.
<div class="multicol">
  <div class="container"></div>
</div>